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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29526

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Fabrication and Study of Nickel Phthalocyanine based Surface Type Capacitive Sensors
Thin films of Nickel phthalocynine (NiPc) of different thicknesses (100, 150 and 200 nm) were deposited by thermal evaporator on glass substrates with preliminary deposited aluminum electrodes to form Al/NiPc/Al surface-type capacitive humidity sensors. The capacitance-humidity relationships of the sensors were investigated at humidity levels from 35 to 90% RH. It was observed that the capacitance value increases nonlinearly with increasing humidity level. All measurements were taken at room temperature.
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[1] Kh. S. Karimov, M. H. Sayyad, M. Ali, M. N. Khan, S. A. Moiz, Khu. B. Khan, H. Farah and Z. M. Karieva, "Electrochemical Properties of Zn/Orange Dye Aqueous Solution/Carbon Cell", J. Power Sources, vol. 155, pp 475-477, 2006.
[2] A. Elahi, M. H. Sayyad, Kh. S. Karimov, Kh. Zakaullah and M. Saleem, "The Photo-Electrical Behavior of n-Si/Orange Dye, Vinyl-Ethynyl- Trimethyl-Piperidole/Conductive Glass Electrochemical Sensor", J. Optoelectronic Adv. Mater. - Rapid Comm.vol.1(7), pp. 333-338, 2007.
[3] M. H. Sayyad, Kh. S. Karimov, K. Ul Hasan, A. Elahi, M. Saleem, Kh. M. Akhmedov and Z. M. Karieva, "Electrical properties of TCNQ/V2O5 heterojunction", Optoelectronic Adv. Mater. - Rapid Comm. Vol.2 (3), pp. 170-175, 2008.
[4] Z. Ahmad, M. H. Sayyad, M. Saleem, Khasan S. Karimov, and Mutabar Shah, "Humidity dependent characteristics of methyl-red thin film based Ag/methyl-red/Ag surface type cell", Physica E. doi:10.1016/j.physe.2008.05.018
[5] M. Saleem, M. H. Sayyad, Kh. S. Karimov, Z. Ahmad, M. Shah, M. Yaseen, I. Khokhar and M. Ali, "Synthesis and photocapacitive studies of Cu(II) 5,10,15,20-tetrakis(4'-isopropylphenyl) porphyrin" J. Optoelectron. Adv. Mater., Vol.10 (6), pp. 1468-1472, 2008.
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[12] S. A. Moiz, M. M. Ahmed, & Kh. S.Karimov, "Effect of temperature and humidity on electrical properties of organic semiconductor orange dye films deposited from solution", Japanese Journal Applied Physics, vol. 44, pp. 1199-1203, 2005.
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[17] Z. M. Rittersma, "Recent achievements in miniaturised humidity sensors-a review of transduction techniques", Sensors and Actuators A, vol. 96, pp. 196-210, 2002.
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